Memphis polycarmes
Fairly common up to 700 m. Puddles, attracted to bait; I once found one on a moth sheet about 3 hours after sunset. Females are greyer and paler, with HW tails.
Similar species: Note rounded wings, and narrow pure brick-red margin on V; M. mora has a more generally more patterned V.
Memphis mora
Common 1050-1600 m. Puddles, attracted to bait. Females are greyer and paler on V, with HW tails. I'm not sure which subspecies occur(s) in Cusco.
Similar species: Note rounded wings; often shows contrasting blackish and orange-brownish areas on V. See M. polycarmes, which is plainer on V and much plainer on D.
Memphis acaudata
Fairly common 1050-1500 m. Attracted to bait and mud.
Similar species: V texture recalls M. glauce, which has HW tails and lacks the pale marginal area VFW.
Memphis glauce
Uncommon up to 1050 m., probably more common in lowlands. Puddles, attracted to bait. Whitish markings VHW are variable, and often absent.
Similar species: Finely and uniformly grizzled V distinctive among species with HW tails; compare individuals missing tails with M. acaudata, which has a pale area on VFW margin.
Memphis lineata
Fairly common 1050-1400 m. Puddles; attracted to bait.
Similar species: V much greyer than M. philumena, which also has HW tails.
Memphis philumena
Rare(?) up to 1050 m., probably somewhat more common in lowlands. Attracted to bait, also puddles. I'm not sure which subspecies occur(s) in Cusco. Males have typical Memphis blue D; female D is brown with an orange band across FW.
Similar species: V much redder than F. lineata, which also lacks HW tails.
Memphis offa
Uncommon up to 1050 m. Puddles; attracted to bait. V pattern variable. I'm not sure which subspecies occur(s) in Cusco; the female shown could be a different subspecies.
Similar species: Very similar to M. phantes, which is probably mostly found at higher elevations though they probably do overlap around 1000 m. I believe phantes has a more pointed FW apex and a concave (not nearly straight) FW margin. Apparent D differences in the photos shown here may not be reliable for identification.
Memphis phantes
Uncommon 1800-2150 m., probably lower but not in lowlands. Puddles; attracted to bait. Females are greyer and paler, with HW tails.
Similar species: See M. offa. M. alberta has a much more falcate FW apex and has HW tails.
Memphis alberta
Uncommon 1950-2700 m. Puddles, attracted to bait.
Similar species: FW apex and tornus much more strongly falcate than others, including M. phantes which lacks tails, and is probably the only Memphis that occurs at the same elevations as alberta.
Memphis acidalia
Fairly common up to 1400 m. Attracted to bait; occasionally puddles. Variable. I'm not sure which subspecies occur(s) in Cusco.
Similar species: Perhaps most similar to M. moruus but usually shows a strong pale line from VFW apex down toward the centre of the wing. Others?
Memphis moruus
Uncommon up to 850 m. Puddles, attracted to bait. I'm not sure which subspecies occur(s) in Cusco.
Similar species: Lacks vertical line down from VFW apex shown by M. acidalia. Others?
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